JPH04103261U - Heat engine starter with support reinforcement member - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a support for a starter for a heat engine made of a material with relatively poor strength. [Structure] The heat engine has a support fixed to a gear box of a heat engine, and a shell is attached to the pinion housing of the support, so that the stress applied to the pinion housing is absorbed by the shell.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a starter for a heat engine with a support reinforcement.

0002

[Conventional technology]

Heat engine starters usually have a support that includes a pinion housing. However, this pinion housing supports the bearing at the end of the starter motor shaft. The plunger of the starter moves along this shaft. Applicable The support usually has an ear-like projection through which the stand can be The motor is fixed to the gearbox of the heat engine.

0003

[Problem that the idea aims to solve]

As is easily understood, the pinion housing is Subject to strong stresses as well as stresses due to road irregularities, in particular the plunger The pinion of the heat engine receives drag when it rotates the ring gear of the heat engine.

0004 Due to the above circumstances, this pinion box must have considerable strength. Therefore, care must be taken in selecting the material. Therefore, this material is expensive This leads to an increase in manufacturing costs.

[0005]

[Means to solve the problem]

The purpose of this invention is to provide a support for a heat engine starter made of a material with relatively poor strength. The goal is to provide the following.

[0006] According to the invention, the device for reinforcing the support is provided at a location of the pinion housing. established in

[0007]

【Example】 The following explanation will be given with reference to the drawings. Fig. 1 shows the main parts of a starter for an internal combustion engine. This starter has an electric motor (1) and a magnetic switch (2). ing. The magnetic switch (2) moves the plunger (3) along the shaft (4). By moving the pinion (3a), the pinion (3a) is engaged with the ring gear of the heat engine (not shown). make it happen

[0008] The end of the shaft (4) is connected to an axle held in the pinion housing (6a) of the support (6). Rotates within the receiver (5). The support (6) includes a motor (1) and a magnet switch. switch (2) is installed. As usual, the pinion housing (6a) is hollow cut. It is shaped like a cone and is cut by one plane to allow movement of the pinion (3a). An opening (6b) is formed to accommodate the

[0009] In the case of the present invention, the support (6) is made of cast aluminum or plastic, etc. Made of a material with poor strength, the stress applied to the pinion housing (6a) is compensated for. A strong member or shell (7) receives it.

0010 Deformation of the pinion housing that may lead to cracks is caused by the above shell (7). This is prevented by This shell (7) has a flange (7a), which The hinge (7a) abuts against the shoulder (6c) of the support (6). In addition, the flange (7a) is attached to the shell ( 7) is provided with a hole through which a screw (8) is passed for attaching it to the support (6).

[0011] The shape of the shell (7) is similar to that of the pinion housing (6a). Therefore, above It has a notch (7b) corresponding to the opening (6b). In the illustrated embodiment, this The raised edge (7c) of the notch (7b) extends along the ridge of the opening (6b) and corresponds to this. come into contact with

0012 In another embodiment of the invention, the shell constitutes an insert (6'), which A support (6) is molded onto the insert (6'). Insert (6') cut The cone-shaped part is buried inside the wall of the pinion housing (6a) and the insert The flange (6') is buried inside the wall forming the shoulder (6c) (Figure 2).

[0013] In FIG. 3, one embodiment of the shell is shown. The shell of this example has a flange (7a), a wall part (7d) perpendicular to this flange (7a), and a wall part (7d) perpendicular to this flange (7a) It consists of a truncated pyramidal section (7e) terminating in a parallel wall section (7f).

[0014] In Figure 4, the assembly pattern is shown when two shells are manufactured at the same time to save material. (9) is shown. The mold (9) consists of two shells (7) facing each other, which have raised edges. They are connected to each other by a partition wall (9a) perpendicular to the section (7c). Once the assembly is complete, After that, cut the partition wall (9a) along the two dashed lines in the figure, and as a result, Only a minimal protrusion (7g) remains on each edge surface (7c).

[0015] In FIG. 5, French Patent Application No. 810369 by the applicant of the present application 8 (French Patent No. 2500538) vinegar. This starter has a base plate (10), this base plate (10) , ears located opposite the fixing legs (6d) (6e) (6f) on the support (6) (10a).

[0016] Therefore, the legs (6d), (6e), and (6f) are connected to the base plate (10) and the gearbox of the heat engine. (13) (see Figure 6) and is tightened. Thus, the support ( 6), as described in the above-mentioned prior art document, compressive stress is generated at these leg portions. It is not subjected to any stress other than the stress it is subjected to.

[0017] In the illustrated embodiment, the support (6) is a plastic molding. Therefore, it is made. Therefore, the support (6) is weak in terms of material and is subject to compressive stress. deforms when

[0018] Due to the above circumstances, there is a gap between the flange (7a) of the shell (7) and the base plate (10). A mounting member (11) (FIG. 6) is provided. Thus, the support (6) penetrates the brace member (11). At the point where the starter is fixed to the engine by means of the bolt (12) that passes through it. is no longer subjected to any compressive stress. Other reactions to the support (6) than those listed above The force is transferred to the shell (7). Therefore, the material of the support (6) has a relatively high strength. This means that you can use what you don't already have.

[0019] In the embodiment of FIG. 7, the shell is in the form of an insert, as in FIG. made and also encased by a plastic molding.

[0020] Ensure that this condition exists and that no compressive stress is transmitted to the support. Because of the necessity, as in the case mentioned above, the retainer member (11) is connected to the engine gear. - provided between the box (13) and the base plate (10).

[0021] As described above, according to the present invention, the support of a starter for a heat engine can be It can be made by tick molding.

[0022] It goes without saying that the descriptions in this specification are merely examples. do not have. Substitution by equivalents in details does not go beyond the scope of the invention. For example, the starter motor may be of a hydraulic type, pneumatic type, or the like.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a starter for a heat engine according to the present invention.

FIG. 2 is a partial cross-sectional view of a starter according to another embodiment.

FIG. 3 is a perspective view of a shell according to the present invention.

FIG. 4 is a front view of a mold for simultaneously manufacturing two shells.

FIG. 5 is a perspective view of a starter with a reinforcing shell mounted on a plastic support.

FIG. 6 is an enlarged partial cross-sectional view taken along line VI-VI in FIG. 5;

FIG. 7 is an enlarged partial cross-sectional view of a variant in which the shell constitutes an insert and the support is molded around it;

[Explanation of symbols]

(6) Support (6a) Pinion housing (6b) Opening (6d) (6e) (6f) Fixing leg (7) Shell (7a) Flange (9) Assembly type (10) Base plate (11) Retainer Component (12) Fixing screw

Claims (3)

[Scope of utility model registration request] 1. A support (6) fixed to a gearbox (13) of a heat engine, the pinion housing (6a) of said support (6) forming a bearing for the shaft (4). , a starter for a heat engine in which a plunger (3) slides along the shaft (4), the pinion housing (6a) of the support (6) having a shell.
(7) is attached, and the shell (7) is in contact with the ridge of the opening (6b) in the pinion housing (6a).
c) and abuts against the support (6)
A starter for a heat engine, characterized in that it is fixed to the support (6) via (7a). 2. The flange (7a) of the shell (7) is provided with means (12) for fixing the starter to the heat engine.
A starter for a heat engine according to claim 1, characterized in that it is fixed to a support (6). [Claim 3] Fixing legs (6d) (6e) in the support (6)
(6f) is the base plate (10) and the fixing screw (1) to the heat engine.
2) and between the flange (7a) of the shell (7) and the base plate (10) to prevent compressive stress from being applied to the legs (6d), (6e), and (6f). The starter for a heat engine according to claim 2, characterized in that a retaining member (11) is provided.